1. Institute for Learning and Brain Sciences, University of Washington, Seattle, WA 98195, USA.
2. Department of Psychology, University of Washington, Seattle, WA, 98195, USA.
3. Learning in Informal and Formal Environments (LIFE) Center, University of Washington, Seattle, WA 98195, USA.
4. Department of Speech and Hearing Sciences, University of Washington, Seattle, WA, 98195, USA.
5. Institute for Neural Computation, University of California at San Diego, La Jolla, CA 92093, USA.
6. Temporal Dynamics of Learning Center (TDLC), University of California at San Diego, La Jolla, CA 92093, USA.
7. Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
8. Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093, USA.